Wireless Bluetooth 5.2 & RF connection (Bluetooth receiver not included, Nano sized RF USB receiver included) Upto 10M of wireless freedom Operates using 2 x AAA batteries (not supplied) Multi Device pairing, with 2 Bluetooth devices and 1 RF device (eg. PC, Tablet, Phone) 3 Multi-Device pairing buttons (accessible using the FN key) offer fast hot swapping between paired Bluetooth & RF devices Black case and keys (other colours made on request) perfectly colour matching our Accuratus M100 multidevice wireless mice range(MOU-M100-BTRF-BK). Mac silver and white also available KYBAC301-BTMAC) Full 105key UK English Windows key layout (UK English, French AZERTY, German, Italian, Polish, Spanish, Arabic, US English, Russian Cyrillic and Czech layouts are available), Mac version also available Integrated numeric keypad, perfect for number crunching with finance & spreadsheets 13 Multimedia and internet hot keys including my computer and calculator Slim special square style minimal keycap str